Answer:


Step-by-step explanation:
The trigonometric function;
has zeroes at
where
is an odd integer.
The trigonometric function;
. This also has zeroes at
where
is an odd integer.
Answer: Choice A. 338 meters
Step-by-step explanation:
tan(31°)=203/x
For this the aweswer is f
Answer:
Step-by-step explanation:
Key to this method is remembering that

So, if you divide the coefficient of x by 2 and square it, that will complete the square. With that in mind, things are easy.
6/2 = 3, so add 

So, c=9
Similarly, for the other two,

You don't really have to worry about the sign, since squaring will always make it positive

Answer:
3^2 + x^2 = 9^2
9 + x^2 = 81
x^2 = 72
x =
, which is about 8.5
Cosine X = 3/9
Cosine X = 1/3
angle x= 70.5
If angle x= 70.5, angle z = 19.5 degrees.
Let me know if this helps!